<!DOCTYPE html>
<head>
    <meta charset="utf-8">
    <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
</head>

<body>
<button id="send">发送复杂数据</button>

<script>
    var data = new Object();
    data["name"] = "XerCis";
    data["message"] = "This is the message from ajax(spice4) !";
    data["number"] = "2015012755";
    data["grade"] = new Array();
    data["grade"].push({"Chinese": 70});
    data["grade"].push({"Math": 80});
    data["grade"].push({"English": 90});
    $("#send").click(function () {
        $.ajax({
            type: 'POST',
            url: "/test",
            data: data,
            success: function (response) {
                alert(response);
            }
        });
    })
</script>
</body>
</html>
